APPETITE: Plant Protein and Exercise Solutions for the Prevention of Undernutrition in Older Adults.

Inclusion Criteria: * Community-dwelling, * Age 65+ years, * BMI 19.5-30.4kg/m2, * Inactive (\<150 minutes of moderate to vigorous physical activity per week and no regular resistance training), * Have proof of Covid-19 vaccination Exclusion Criteria: * Major cognitive impairment (MMSE ≤24), * Uncontrolled Clinical depression (CES-D \>16), * Medical condition or current medication known to impact appetite or energy intake, * Other medical condition that may impact ability to participate in study or study outcomes, * Heavy smoker (\>10/day), * Plans to relocate out of the study area within the next 6 months, * Inability to come to study centre/PA program location, * Currently participating in another intervention study, * Inability to participate in physical activity, * Unable to walk across a room, * Allergic to or unwilling to consume any of the study test foods, * Loss of taste or smell associated with COVID-19, * Unwilling to be randomised to any intervention group.